Alright, let's work through 2115 times 9804 step by step
2115 × 9804 = 9804 × (2115)
+ 9804 × 5 which equals 49020
+ 9804 × 10 giving us 98040
+ 9804 × 100 that equals 980400
+ 9804 × 2000 that results in 19608000

= 20735460
